EP 0893151 B1 20021127 - Dust filter bag
Title (en)
Dust filter bag
Title (de)
Staubfilterbeutel
Title (fr)
Sac filtrant à poussières
Publication
Application
Priority
DE 19731860 A 19970724
Abstract (en)
[origin: EP0893151A2] The dust filter bag has a fibre layer (4, 5) laminated to a paper layer (2) at the clean gas side. The fibres are of a synthetic polymer. The fibres have an electrostatic charge in a fibre layer (4, 5) with residual strength through adhesive bonding and/or inter-looping of the fibres against each other to bond their fibres and/or filaments together. The fibre layer (4, 5) has fused polymer window zones for additional material strength and bonding with the paper layer (2). The fused polymer zones can be in bars or distributed to form a honeycomb or waffle structure to give dust chambers. The fused polymer zones penetrate at least partially into the paper layer (2), which increases the paper resistance to moisture and/or increases its shear strength. The fibre layer has at least two layers (4, 5), with a spun bond nonwoven layer (4) on the side away from the paper (2) and with microfibres in the melt-blown layer (5) against the paper (2). The layer (5) of microfibres has a weight of 5-40 g/m<2>, and the two fibre layers (4, 5) together have a weight of 5-50 g/m<2>. The material for the paper layer (2) has a weight of 20-100 g/m<2>.
IPC 1-7
IPC 8 full level
A47L 9/12 (2006.01); A47L 9/14 (2006.01); B01D 39/16 (2006.01); B01D 39/18 (2006.01); B01D 46/02 (2006.01); B32B 29/02 (2006.01); D04H 1/60 (2006.01); D04H 13/00 (2006.01)
CPC (source: EP KR US)
A47L 9/14 (2013.01 - EP US); B01D 39/1623 (2013.01 - EP KR US); B01D 39/18 (2013.01 - EP US); B01D 46/0032 (2013.01 - KR); B01D 46/02 (2013.01 - EP US); B01D 46/023 (2013.01 - KR); B32B 5/022 (2013.01 - US); B32B 5/26 (2013.01 - US); B32B 7/12 (2013.01 - US); B32B 29/02 (2013.01 - EP US); D04H 1/4374 (2013.01 - EP US); D04H 1/559 (2013.01 - EP US); D04H 1/60 (2013.01 - EP US); D04H 13/00 (2013.01 - EP US); B01D 2239/0618 (2013.01 - KR); B01D 2239/0663 (2013.01 - KR); B01D 2239/0681 (2013.01 - KR); B32B 2307/718 (2013.01 - US); Y10S 15/08 (2013.01 - US); Y10S 55/02 (2013.01 - EP US)
Citation (examination)
- WO 9730772 A1 19970828 - VORWERK CO INTERHOLDING [DE]
- EP 0635297 A1 19950125 - GESSNER & CO GMBH [DE]
Designated contracting state (EPC)
ES FR GB IT
DOCDB simple family (publication)
EP 0893151 A2 19990127; EP 0893151 A3 19990901; EP 0893151 B1 20021127; AR 009890 A1 20000503; BR 9802591 A 20001205; CN 1073874 C 20011031; CN 1208666 A 19990224; DE 19731860 C1 19990128; ES 2186042 T3 20030501; JP 3020479 B2 20000315; JP H1199107 A 19990413; KR 100283164 B1 20010302; KR 19990014084 A 19990225; US 6045595 A 20000404
DOCDB simple family (application)
EP 98107934 A 19980430; AR P980103538 A 19980720; BR 9802591 A 19980723; CN 98115565 A 19980701; DE 19731860 A 19970724; ES 98107934 T 19980430; JP 21000398 A 19980724; KR 19980029591 A 19980723; US 12143098 A 19980723